The British term for the punctuation mark most commonly found at the end of a sentence.

The moment when the vehicle you are driving is no longer in motion; an instant of equilibrium achieved between decelerating before a stop sign and accelerating seconds later; the second in which any ornaments or fuzzy dice hanging from the rearview mirror are perpendicular to the ground.

*After being stuck upside-down on Six Flags' new Superman ride for an hour*